Despite the title this manga has nothing to do with sex, just young people rebelling against the world.
The manga is about the adventures of a girl, Kaho. In the first chapter she goes on holiday to Okinawa and starts following around Yuki, a car-stealing punk.

From An Endless Story:
Popular stories from fashion magazine Zipper have made their way into a special book.

Letter by Hazuki Kanae
"Who are you?"
On a certain day, she discovered a letter left in her school desk...

My Best by Fujisue Sakura
"I can't touch him, because we are friends."
Where will these unsuppressable feelings lead us...

Miss You by Kumiko Saiki
And the day they part ways finally arrives...

Goodbye, I'll See You Tomorrow by Tomoko Noguchi
Yasaki, who finally gets a boyfriend, now has to enter into a long distance relationship! Even though she thought that the pain of not being able to see him was the same...

CHERRY by Matsumoto Nanako
The only person that would suit her is someone as extraordinarily popular as she is, right!? The person in question should definitely be...

To the You Who is Here by Haneda Ibuki
Does she still seem like a child to her older boyfriend?
All she wants is for him to glance her way...

Yuzuki has always had an unrequited love towards her childhood friend Junya, but one day Junya starts dating his classmate Kaori.

Yuzuki was shouldering the pain that she would never be able to express her feelings to Junya. A while back, she had noticed that Toshiki was looking at Kaori with such a sorrowful expression. In order to obtain the paradise that she desired for, she decided to become accomplices with Toshiki but…!?

Contains a short story named Hatsutaiken:

Araki is dating Arashi but she has a secret from her past that she doesn't want Arashi to know. Will she be able to keep it a secret?

Collection of oneshots:

1) Kimi no Soba de Yamikumo na Yume wo Miru

2) 4/365 no Koibito

3) Ore no Koto Suki na Kuse ni

4) Seto no Omise no Okyakusama (Seto's Customers)
A bittersweet oneshot consisting of fairies and cakes.

5) Samishisa Spice

6) Boku to Neko to Akuma to Nichijou

7) Sora no Saudade

It was later released in the "30th Aniversary - Ay", a special book.

From Friendship Scans:

In the history of the Kingdom of Siegerland, there has always been a powerful Shadow Messenger who acted as a guardian for the country. Yet the Shadow Messenger himself doesn’t have a shadow!
Every Shadow Messenger chooses a guardian out of all the knights. In order to show his devotion, the knight then offers his own shadow as a gift to the Shadow Messenger and by that becomes a Swordsman.

Lisa is a normal girl who leads a happy life like everyone else, when suddenly her father dies a tragic death. From that day onwards, her mother forbids her to leave the house. In the end, she secretly steals away with her childhood friend Louis. They are playing outside, when her playmates die under strange circumstances… Only Lisa survives, but she lost her memories of that day...

From Rebellious Love:
A cute short story about a girl who's a tomboy, but whenever she's around him, she seems to turn girly.

Nomura Nobuo was a normal highschooler, until his "gift" convinced him of his separation from the masses. When his gift is unmasked by Kaburagi Jirou, it marks the start of a war. A war on society itself. The War Front: Spike Hills.

Yunogi has no working experience, but after being tricked into thinking he got a normal job out of luck, it turns out it's not so normal after all. Yunogi has to act as horror writer Kirino Shuusuke's dummy (i.e., stand-in).

Izumi Wakakusa is a renowned actress obsessed with beauty. When a hideous mark shows up on her face, she suddenly disappears and gives birth to a little girl: Sakura.

Sakura is always pampered and overprotected by her mother, until the day that she discovers why she was born.

Fujinami Kou is a high-school second-year who had lost his boyfriend, an upperclassman schoolmate, to a car accident an year previously. On the anniversary of Misumi senpai's death, Kou is dispirited and contemplating skipping school. Kakitsubata Saki, a first-year, sees him and offers help, assuming that he's ill. As Kou startles at the sight of Saki's face and mentions that he resembles "the person I used to go out with", the younger boy is instantly intrigued and resolves to discover his sorrowful, introverted upperclassman's secret.

From Hana-mi:

This series is adorable. And occasionally freakish and violent. Mutsu Kokonose, a tiny exorcist and holy terror, crash-lands on a mythical island where the fairy tales are real...

Sengoku Rance is all about the most perverted hero of a fantastical world. He journeyed to Japan in order to have his way with the ladies of this land, and ended up as the secret ruler of Nobunaga House. In the process of conquering Japan, he unwittingly play the dupe for an ancient demon sealed in this land just waiting to be freed. Nevertheless, be it either demons or hostile forces, none shall stand between Rance and his ladies.

Nanako Kobayashi, a 17-year-old teenager, has an ugly face who seems to not have a care for the world. One day, she got a call, only to be given two choices to answer a question. A devil suddenly appears, taking the form of her teddy bear. The devil is willing to grant her three wishes; each based on two options; What wishes will Nanako choose?

[From Ushi]:

"Once upon a time I dreamed I was a butterfly,
fluttering hither and thither,
to all intents and purposes a butterfly.
I was conscious only of following my fancies as a butterfly,
and was unconscious of my individuality as a man.
Suddenly I woke, and there I lay, myself again.
Now I do not know whether I was then a man dreaming I was a butterfly,
or whether I am now a butterfly dreaming I am a man."
-Chinese proverb from 3rd century B.C.
(Zhuang Zhou Meng Die (庄周梦蝶 ))

Aka Hyakki YakoushouColored illustrations of scenes from the manga Not complete.

1. Sekigae Game
Tamami is shy, clumsy and slow at everything. Everybody around her and Tamami herself think that she is good for nothing. That’s why Tamami can’t believe that Mitsui-kun, cool and good-looking guy from her class, likes her. It must be some kind of misunderstanding. Or is it not?

2. Goshujin-sama no Inu

3. Hazukashigariya na Kare no Koto
Mami was confessed to by a delinquent, Masamune. At first she thought he was a scary guy but found his reactions quite cute. How can she get this bad boy to become more lovey-dovey?? (From Intercross)

4. Yasahii Akuma

5. Hana, Hiraku.

Include:

- Covered in Cinders (KOTOKAWA Aya)
The darker version of Cinderella.This is a oneshot is also in vol 9 of Cafe Minamiaoyama Kottoudoori.

- Rapunzel (SAKAMOTO Mimei)
SAKAMOTO presents a more mature version of the classic Brothers Grimm fairytale Rapunzel.

- The Frog Prince (HASHIMOTO Noji)
A more mature telling of the fairytale, The Frog Prince.
Not for children under 18 and contains animal X human relations.

- Vampire Fantasy (Hanamura Rie)
[From ShoujoMagic]: A very creepy vampire story featuring a female vampire.

- other

Since her dad's death since elementary school, Kamura has taken the role of being the responsible one in the family, including cooking, cleaning, and simply even getting her mom up for work, whom she promised to always protect. But then her mom tells her that she is getting remarried, and finds out about her soon-to-be 2 year older brother-in-law who she just saw homeless on the streets the day before! And now her friend Youhei, who always teases and makes her feel like a fool, is acting differently...and even tries to comfort her?! Will Kamura be to able accept her new family life with a father and brother, and be able to let go her feelings of being responsible for her mother?

Kanae, who's just been through terrible heartbreak, decides to take a vacation to the mountains, hoping to take her mind off of things. Her skiing instructor turns out to be more of a comfort to Kanae then anything, and she finds herself slowly opening up to him. Unfortunately, before long, it's time to say goodbye...

Otaku and idol become seiyuu. Lessons at school, work, colleagues, and unexpected events ... Learn everything about the world through the eyes of a young seiyuu!

From Aerandria Scans:

Kanbara Rinko is a half-Japanese, half-British girl, so she has blonde hair and blue eyes. However, the vice president of the public moral committee at her school, Kotoshiba, thinks that she dyed her hair and uses contact lenses, so he constantly gives her troubles. And with her attitude, everyone in her class thinks that she’s a delinquent, so she doesn’t have any friends. Her only joy in coming to school is to see Hachiouji-senpai, the gentle and handsome president of the public moral committee. She thinks he’s her ideal prince, but is he really?